feat(compiler): add scheduler timer reactor

[julia-script]

Summary

• override the scheduler task-local MonotonicClock.waitFor and waitUntil operations so only the calling Fiber parks while siblings continue
• add a stable deadline heap, cached per-turn monotonic mark, and exact registration/Wake ownership behind a private event-interest boundary that can later host HTTP, WebSocket, and other async sources
• make timer completion, structured cancellation, typed shutdown, provider reuse, and forced destruction of a parked nested scheduler release every authority without stale readiness
• update the OpenSpec proposal, language/reference docs, generated standard-library table, and toolchain integrity digest

OpenSpec

All 31 tasks in add-scheduler-timer-reactor are complete. Strict validation passes.

Verification

• pnpm typecheck
• pnpm exec biome check .
• pnpm test
• pnpm check
• pnpm release:candidate
• openspec validate add-scheduler-timer-reactor --strict
• git diff --check

Coverage includes scripted-clock evaluator semantics, direct Wasm timer agreement, shared native timer execution, exact cancellation/allocation traces, arbitrary heap removal, scheduler reuse, and nested forced-owner cleanup. The architecture, implementation, and spec reviewer loops all completed with no remaining actionable findings.

[vercel]

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Project	Deployment	Actions	Updated (UTC)
silk-effect-docs	Ready	Preview	Aug 30, 2026 3:18pm